673505530551 has 12 divisors (see below), whose sum is σ = 1111818653712. Its totient is φ = 384860303136.

The previous prime is 673505530543. The next prime is 673505530553. The reversal of 673505530551 is 155035505376.

673505530551 is a `hidden beast` number, since 67 + 3 + 5 + 0 + 5 + 5 + 30 + 551 = 666.

673505530551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 673505530551 - 2³ = 673505530543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673505530497 and 673505530506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673505530553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5345281926 + ... + 5345282051.

It is an arithmetic number, because the mean of its divisors is an integer number (92651554476).

Almost surely, 2^673505530551 is an apocalyptic number.

673505530551 is a deficient number, since it is larger than the sum of its proper divisors (438313123161).

673505530551 is a wasteful number, since it uses less digits than its factorization.

673505530551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690563990 (or 10690563987 counting only the distinct ones).

The product of its (nonzero) digits is 1181250, while the sum is 45.

The spelling of 673505530551 in words is "six hundred seventy-three billion, five hundred five million, five hundred thirty thousand, five hundred fifty-one".